Stephanie Peterson, center, and Amber Nacyk, right, line up before an event with Role Model at the South Portland Bull Moose on Saturday. (Brianna Soukup/Staff Photographer)Pop singer Tucker Pillsbury, who uses the stage name Role Model, signed copies of his new album “Chuck Timely & The Hourglass” at the South Portland Bull Moose store on Saturday. She came to Maine for the concert, but by the time she heard about the Bull Moose event, it was sold out. Fans line up before an event with Role Model at the South Portland Bull Moose on Saturday. “Diva” is a tongue-in-cheek facet of Pillsbury’s Role Model persona and a term he also applies to his fans.